Bench-clamp



(No Model.) 4 R. H. STRONG.

BENCH CLAMP.

Patented Apr. 22

awvewko z 0 M e w t UNITED STATES PATENT OFFICE.

ROBERT H. STRONG, OF CRESTON, IOWA.

BENCH-CLAMP.

SPECIFICATION forming part of Letters Patent N 0. 426,341, dated April 22, 1890. Application filed December 12, 1889. Serial No. 833,490. (No model.)

To all whom it may concern:

Be it known that I, ROBERT H. STRONG, a citizen of the United States of America, residing at Creston, in the county of Union and State of Iowa, have invented certain new and useful Improvements in Bench-Clamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to certain new and useful improvements in bench clamps or vises.

The object of the invention is to provide a clamp or vise adapted to hold sewing machines or other analogous devices upon a work-bench, so that repairs and adjustments can be readily made; "and it consists in providing a baseplate adapted to be readily secured to the work-bench, said base-plate carrying an angle plate which is movable thereon and to which is adjustably clamped a bifurcated standard carrying a rock-shaft, and means for adjusting said rock-shaft and holding it in place, said rock-shaft being also provided with projecting lugs and an arm having a clamp-bar, by means of which a sewing-machine or analogous device can be held rigidly uponthe rock-shaft; and the invention further consists in the construction and combination of the parts, as will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view, and Fig. 2 is a side view, partly in section.

A refers to a workbench, to which a bracket B is secured by means of clamp plates or bolts, and the outer end of this bracket, which projects beyond the work-bench, is perforated to receive a bolt 1) for clamping thereto an angle-plate O, the contacting faces being roughened to effect a rigid adjustment. The vertical member of the angle-plate is slotted and countersunk at intervals to receive abolt b for adjustably securing in place a standard D, the upper end of which is bifurcated, as shown, and between these members the rockbar carrying the vise is mounted. The rigid Vertical and horizontal adjustment of the standard D is effected by providing the adjoining faces of the plate 0 and standard D with projecting webs b 19 which interlock, the webs upon the angle-plate being cut away, as shown at 76, to permit the lower end of the standard to lie therein when the said standard is placed at right angles, and when so arranged by tightening the bolt the parts will be securely held.

One of the arms of the standard is provided with a perforation d,through which is adapted to pass a pin carried by a spring D, attached to the arm, said pin engaging with a perforated disk or plate E, rigidly fixed upon the rectangular rock-shaft E, and by means of this plate and spring-actuated pin the rockshaft can be held at any angle that may be desired. The rock-bar E is also provided with plates F, which are adjustable longitudinally upon the rook-shaft or slide thereon, and these plates project from said rock-shaft and are provided with notched ends, with which a plate, as the bed-plate of a sewing-machine, is adapted to engage. Centrally the rock-bar is provided with an arm G, which extends upwardly from the rock-shaft, and thence projects over the object to be held in place and downwardly, as shown at'g. This arm is perforated, and through the perforations therein passes a screw-threaded barH, having a looped end 71, which is adapted to engage the outer edge of the bed-plate of a sewing-machine or other obj eot, a thumb-nut i being provided for drawing the screw-threaded bar toward the projecting plates carried by the rock-shaft.

From the foregoing description it will be readily seen that by means of this device a sewing-machine can be held at any angle desired, either vertically or horizontally, so that all the parts thereof may be accessible.

Instead of employing bolts and thumb-nuts for holding the parts, I may modify my invention by employing in lieu thereof cams or other equivalent devices.

I claim- 1. The combination of a bifurcated standard, a rectangular rock-shaft journaled between the bifurcations of the same, notched plates mounted 011 said rock-shaft and a clamp carried thereby, said rock-shaft having near one end a perforated plate, with which a-pin engages, substantially'as and for the purpose set forth.-

2. In combination with a bifurcated standard provided with bearings at its upper ends, a rock-shaft journaled in said bearings and provided with a clamp for holding objects thereon, said clamp being movable upon the rock-shaft, substantially as and for the purpose set forth.

3. In a device for holdingsewingmachines or other analogous objects, the combination of a bifurcated standard having bearings at its upper ends, a rock-shaft j ournaled therein, the central portion of said rock-shaft being rectangular in cross-section and provided with movable notched plates and a movable clamp, said rock-shaft having rigidly attached thereto a perforated plate, with which a springactuated pin carried by one of the standards engages, substantially as and for the purpose set forth.

4. The combination, in abench jack or vise, of a plate adapted to be secured to a workbench, the free-end of which carries an angleplate, the vertical member of said angle-plate being slotted and provided with webs for engagement with webs formed on the-lower end of a standard, a bolt for clamping the parts, the webs of the angle-plate being cut away to receive the web on the standard when it is desired to clamp the same at right angles, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT H. STRONG. Witnesses:

J. L. HAVERICK, J. R. BRINK. 

